agent-offload 0.1.1

agent-offload-0.1.1 is not a library.

agent-offload launches another coding agent and blocks until that agent finishes. Use it when your main agent wants to delegate implementation work while keeping the current conversation in control of review, verification, and final reporting.

Why?

Sometimes you already have a thorough Markdown plan, and implementing it with a heavy, slow model is overkill. The host agent should be able to hand that work to a cheaper and faster model directly, without user manually starting a new Codex, OpenCode, or other agent session.

Claude Code can delegate to subagents, but that keeps delegation inside Claude's own harness and model choices. If you want to use another model, another provider, or another agent CLI, there is no smooth handoff.

agent-offload bridges that gap with tmux or headless subprocess execution. The host agent runs one blocking command, the delegated task opens in a new tmux pane or runs headlessly, and the host agent waits until the task finishes. Then the host agent can inspect the diff, run checks, and continue the review in the original conversation.

What it does

Launches configured agent profiles in tmux or in headless mode
Sends prompts as an argument, stdin, or a prompt-file argument
Adds completion-file instructions to tmux delegated prompts
Waits until the delegated agent exits or publishes done.md
Detects if the tmux pane exits before completion
Kills the delegated pane after completion
Supports per-profile environment variables, including forwarding from the host environment
Installs its Claude Code skill with agent-offload install-skill

Quick start

1. Install

# Shell script, macOS/Linux
curl -fsSL https://raw.githubusercontent.com/raine/agent-offload/main/scripts/install.sh | bash

# Homebrew
brew install raine/agent-offload/agent-offload

# Cargo from source
cargo install --git https://github.com/raine/agent-offload --locked

2. Create a config

agent-offload reads:

~/.config/agent-offload/config.yaml

See Configuration for an example.

3. Install the skill

agent-offload install-skill

This writes:

~/.claude/skills/agent-offload/SKILL.md

Then use /agent-offload from Claude Code, or call the CLI directly.

4. Delegate work

From Claude Code, invoke the installed skill:

/agent-offload implement the change in history/plan.md

The host agent loads the skill, chooses a configured profile, runs agent-offload, waits for the delegated agent's summary, then reviews and reports the result in the current conversation.

How it works

Each run gets a directory under:

~/.local/state/agent-offload/runs/

The run directory contains:

File	Purpose
`prompt.md`	The augmented prompt sent to the delegated agent
`launch.sh`	The generated executable launcher script
`done.md`	The completion summary written by the delegated agent

In tmux mode, agent-offload appends instructions to the prompt telling the delegated agent to write a concise summary to done.md.tmp, then atomically rename it to done.md. The parent process waits for done.md to exist. If the tmux pane closes first, the run fails instead of hanging silently.

Configuration

A config has a default profile and one or more named profiles. This example uses Codex Spark and a DeepSeek-backed Claude Code profile:

default_profile: claude-deepseek-flash

profiles:
  codex-spark:
    command: /opt/homebrew/bin/codex
    interface: codex
    args:
      - --yolo
      - --model
      - gpt-5.3-codex-spark
      - -c
      - model_reasoning_effort="high"
    env: {}
    prompt: argument

  claude-deepseek-flash:
    command: /Users/raine/.local/bin/claude
    interface: claude
    args:
      - --dangerously-skip-permissions
    env:
      ANTHROPIC_BASE_URL: https://api.deepseek.com/anthropic
      ANTHROPIC_AUTH_TOKEN:
        from_env: DEEPSEEK_API_KEY
      ANTHROPIC_MODEL: 'deepseek-v4-flash[1m]'
      ANTHROPIC_SMALL_FAST_MODEL: 'deepseek-v4-flash[1m]'
      ANTHROPIC_DEFAULT_OPUS_MODEL: deepseek-v4-flash
      ANTHROPIC_DEFAULT_SONNET_MODEL: deepseek-v4-flash
      ANTHROPIC_DEFAULT_HAIKU_MODEL: deepseek-v4-flash
      CLAUDE_CODE_SUBAGENT_MODEL: deepseek-v4-pro
      CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC: '1'
      CLAUDE_CODE_DISABLE_NONSTREAMING_FALLBACK: '1'
      CLAUDE_CODE_EFFORT_LEVEL: max
      CLAUDE_CODE_ENABLE_TELEMETRY: '0'
    prompt: argument

Profile fields

Field	Description
`command`	Binary or script to execute
`interface`	Argument shape for the agent CLI
`args`	Extra arguments passed before the prompt
`env`	Environment variables exported before launch
`prompt`	How the augmented prompt is delivered
`headless`	Whether to run this profile without tmux

Interfaces

Interface	Prompt argument form
`generic`	`-- "$PROMPT_CONTENT"`
`claude`	`-- "$PROMPT_CONTENT"`
`codex`	`-- "$PROMPT_CONTENT"`
`opencode`	`--prompt "$PROMPT_CONTENT"`

Prompt delivery

Value	Behavior
`argument`	Pass the prompt using the selected interface's argument form
`stdin`	Redirect the prompt file to stdin
`prompt-file-arg`	Replace `{prompt_file}` in `args` with the prompt file path

Use prompt-file-arg only when at least one arg contains {prompt_file}.

Environment variables

Literal values are written directly:

env:
  CLAUDE_CODE_ENABLE_TELEMETRY: '0'

Values can also be forwarded from the host environment:

env:
  API_KEY:
    from_env: MY_SECRET_KEY

Environment variable names must be valid shell identifiers.

Commands

`run`

Launch a profile with a prompt and wait for completion.

agent-offload run --profile claude "fix the failing tests"
cat history/plan.md | agent-offload run --profile codex-spark

The run subcommand is optional, so this is equivalent:

agent-offload --profile claude "fix the failing tests"

Options:

Option	Description
`-p, --profile <name>`	Profile name from the config
`--config <path>`	Override the config file path
`-H, --headless`	Run this invocation in headless mode

`profiles`

List configured profiles and mark the default.

agent-offload profiles
agent-offload profiles --config ./agent-offload.yaml

`install-skill`

Install the bundled Claude Code skill.

agent-offload install-skill

The command is idempotent. It prints up-to-date when the installed skill matches the bundled copy.

Agent workflow

A typical host-agent workflow looks like this:

> /agent-offload implement the plan in history/2026-06-06-plan-feature.md with the spark profile

The host agent:
1. Loads the `agent-offload` skill
2. Pipes the plan into `agent-offload run --profile codex-spark`
3. Waits for the delegated agent's completion summary
4. Inspects the diff and runs the requested checks
5. Reports the reviewed result

The delegated agent should do the implementation. The host agent should still inspect the diff, verify behavior, and decide what to report or commit.

Requirements

Rust, for building from source
tmux
At least one configured agent CLI

Development

git clone https://github.com/raine/agent-offload.git
cd agent-offload
just check

just check runs formatting, clippy fixes, build, tests, and clippy.

Useful commands:

just run --help
just run profiles --config history/2026-06-06-sample-config.yaml

Related projects

consult-llm - ask other LLMs for planning, review, and debugging help
git-surgeon - non-interactive hunk staging and commit surgery for agents
workmux - git worktrees and tmux windows for parallel agent workflows